197421

素因数分解:

$3^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{79}}^1$

素因数の和:113

約数の個数: 24

約数和(自身を含む): 328320

約数和(自身を除く): 130899

約数列:

[1, 3, 7, 17, 21, 49, 51, 79, 119, 147, 237, 357, 553, 833, 1343, 1659, 2499, 3871, 4029, 9401, 11613, 28203, 65807, 197421]

約数ペア:

[(1, 197421), (3, 65807), (7, 28203), (17, 11613), (21, 9401), (49, 4029), (51, 3871), (79, 2499), (119, 1659), (147, 1343), (237, 833), (357, 553)]